Antitussives (Includes Dristan DM) ↔ psychiatric conditions

Caution should be used when prescribing antitussives such as dextromethorphan and benzonatate in patients with psychiatric or emotional conditions. Isolated instances of bizarre behavior, including mental confusion and visual hallucinations have been reported in patients taking antitussives, specially when combined with other prescribed drugs such as monoamine oxidase inhibitors.